JP4055466B2 - Body composition detection device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
  The present invention relates to a biological information detection device that detects biological information such as an electrocardiogram signal and biological impedance, or a body fat mass, a body fat percentage, and a lean body mass using the biological impedance measured by the biological information detection device. The present invention relates to a body composition detection device for detecting a body composition of a body.
[0002]
[Prior art]
  Conventional biological information detection devices for detecting biological information such as electrocardiogram signals and biological impedances are indispensable for electrical connection with a living body, and in clinical examinations, a biological electrode is attached to the surface of a living body where it is necessary. The living body and the biological information detecting device are electrically connected via a biological electrode. In recent years, a biometric information detection apparatus has been developed that can easily detect biometric information at home and use it for daily health management. For example, a body fat scale disclosed in Japanese Patent Application Laid-Open No. 11-188016 The impedance between two different points of a living body is detected, and the body fat mass is measured using the detected impedance. As shown in FIG. 9, current application electrodes are respectively provided on grips provided on both sides of the apparatus. 3a, 4a and voltage measuring electrodes 3b, 4b are provided, and the living body is connected to the device by grasping the two grips with the left and right hands, and a measuring current is applied from the current applying electrode to measure the voltage. A bioelectrical impedance between both hands is measured by obtaining a potential difference between both hands generated by the measurement current by the electrode, and the body fat mass is calculated from the measurement result.
[0003]
  In addition, in a biological information detection apparatus that collects an electrocardiogram, for example, it is worn on the wrist as disclosed in JP-A-7-88090, and an electrocardiogram signal and a fingertip volume pulse wave are measured. In the case of a wristwatch-type sphygmomanometer that measures blood pressure, electrodes 3 and 4 are provided on the front and back surfaces (indicated by broken lines) of the measuring device mounted on the wrist, as shown in FIG. At that time, the surface of the wrist 4 comes into contact with the surface of the wrist, and the electrode 4 on the surface presses the finger of the arm on which the device is not worn against the electrode, so that both arms come into contact with the separate electrodes. An electrocardiogram signal can be detected from the potential difference.
[0004]
  Furthermore, in the body fat sphygmomanometer disclosed in Japanese Patent Application Laid-Open No. 2001-70259, as shown in FIG. 11, a body fat measuring function is added to a cuff pressurizing sphygmomanometer worn on the wrist, and the body fat measuring electrode is a mounting means. A first electrode 3 is disposed on a portion of the cuff 1 in contact with the wrist, and a second electrode 4 is disposed on the lateral side of the main body 2. By extending the body part perpendicularly to the arm and placing the second electrode 4 on the surface of the extension part, the body arm side and the second electrode 4 are in contact with each other when measuring body fat. The contact with the finger on the side to be touched is prevented so that a measurement error of the bioimpedance due to the contact does not occur.
[0005]
[Problems to be solved by the invention]
  However, in the conventional biological information detecting device, in the case of a shape that is grasped with both hands, the grip portion becomes large, and it is difficult to obtain a small shape that is easy to carry.
[0006]
  In the case of a shape that is worn on the wrist and presses the finger, the arm on the side on which the biological information detecting device is mounted and the finger pressed on the electrode on the surface of the device main body may be in contact with each other and measurement may not be performed correctly.
[0007]
  In addition, in order to prevent measurement errors due to contact between both arms, the device is not mounted by simply separating the main body from the arm in the case of preventing the contact by separating the arm from the arm to which the device is mounted to some extent. When the side finger is brought into contact with the electrode, the posture is somewhat unreasonable, such as forcibly bending the wrist, and because of the influence of biological vibration caused by the unreasonable posture, the contact is not stable and measurement errors may occur. There was a problem that the measured value was not stable.
[0008]
[Means for Solving the Problems]
  In order to solve the above problems, the present inventionBioimpedance measuring means for detecting bioimpedance between two different points on the living body, a pair of electrodes brought into contact with two different points on the living body, input means for inputting physical information, display means for displaying the detection results, A main body for storing the bioimpedance measuring means, the electrode group, the input means, and the display means; and a mounting means for mounting the main body on the living body. The main body has a first block to which the mounting means is fixed; The second block includes one of a pair of electrode groups, and the second block is inclined with respect to the surface side on which mounting means is fixed with respect to the first block, and the second block is the first block. The angle detecting means is configured to be rotatable about a connecting portion with the block, and detects information of an angle of the second block with respect to the first block. For inputting body information using degrees detection result.
[0009]
  With the above configuration, when the main body is mounted on the living body by the mounting means, the second block is inclined with respect to the side on which the mounting means of the first block is disposed with respect to the first block fixed to the mounting means. It is possible to contact the electrode in a natural posture when it is brought into contact with the second block of the upper limb on which this apparatus is not worn, and for that reason, due to subtle vibrations of the living body caused by an unstable posture Therefore, the noise of the measurement signal is reduced, so it is more accurateBioimpedanceCan be detected, and it is easy to use and can detect on the living body accuratelyBody composition detection deviceCan provide.In addition, since the second block is configured to be rotatable around the connection portion with the first block, the second block can be brought into contact with the electrode disposed on the surface of the second block at a position where the measurer can easily measure. In addition, when inputting numerical values such as weight, height, age, and gender necessary for detecting the body composition, the number can be increased / decreased and the speed of change can be changed depending on the angle between the second block and the first block. Can perform efficient work efficiently.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
[0011]
【Example】
  Embodiments of the present invention will be described below with reference to the drawings.
[0012]
  Example 1
  FIG. 1 is a block diagram of a body composition detection apparatus according to Embodiment 1 of the present invention, and FIG. 2 is an external view of the apparatus. The body composition detection device of the present embodiment is a body fat meter that detects the bioimpedance between the left and right upper limbs and measures the body fat mass of the measurer from the value and physical information such as the height and weight of the measurer, The example of the form of mounting | wearing and using it on a left wrist is shown. In the figure, 1 is a band which is a mounting means for mounting on the wrist, 2 is a main body, 2a is a first block which is fixed to the wrist by the mounting means, and 2b is the mounting means 1 with respect to the end of the first block. The second block 3 is connected to be inclined to the attached plane side, 3 is a first electrode group disposed at a position in contact with the wrist on the wrist side surface of the first block 21, and 4 is both sides of the second block. A second electrode group 5 is placed on the surface of the first block or the second block to contact a finger on the side different from the wrist on which the mounting means is mounted. Input means 6 for inputting necessary items, and display means 6 for displaying the results.
[0013]
  Inside the first block are stored bioimpedance measuring means 7 and body fat mass calculating means 8 which is body composition detecting means. The bioimpedance measuring means 7 includes measuring current applying means 7a, voltage detecting means 7b and living body. It comprises impedance calculation means 7c. Among them, the measuring current applying means 7a is connected to the current electrode 3a of the first electrode group 3 and the current electrode 4a of the second electrode group 4, and applies a 50 kHz 0.5 mA sine wave constant current between them to detect the voltage. The means 7b is connected to the voltage electrode 3b of the first electrode group 3 and the voltage electrode 4b of the second electrode group 4, and detects a potential difference between these two voltage electrodes. Based on the magnitude of the measurement current 7a applied to the living body and the potential difference detected by the voltage detecting means 7b, the living body impedance is calculated.
[0014]
  The body fat mass calculation means 8 selects a calculation formula to be used for calculation from a plurality of calculation formulas from the age and gender patterns input from the input means 5, and the height and weight values input from the input means 5 and the living body. The body fat mass is calculated by substituting the bioimpedance value output from the impedance calculating means 7c into the calculation formula, and the body fat mass value is output to the display means 6 and displayed. Among the above, the input means 5 includes a power button 5a, a measurement start button 5b, an enter button 5c, an increase button 5d and a decrease button 5e. The power button 5a turns on / off the apparatus power, and the measurement start button 5b This button is pressed when starting measurement. The bioimpedance measurement means button 5c, the increase button 5d, and the decrease button 5e are used for inputting body information necessary for body fat measurement such as body weight and height, and an input screen is displayed by pressing the bioimpedance measurement means button 5c. Is displayed, the number is increased / decreased with the increase button 5d and the decrease button 5e to match the number of the subject, and by pressing the bioimpedance measurement means button 5c again, the body information is input and the next item screen is displayed.
[0015]
  The effect | action by the said structure is demonstrated. FIG. 3 shows a flowchart. First, when the power button 5a on the input means 5 of the main body 2 is pressed to turn on the power (S1), a height input screen is displayed (S2), and a default height 160 cm is displayed and blinking. In this state, the increase button 5d (S3) or the decrease button 5e (S5) is pressed to change the value displayed on the display means 6 (S4, S6), and the decision button 5c is pressed according to the value of his height (S7). Then, the numerical value is fixed (S8) and the process proceeds to input of the body weight (S9).
[0016]
  The display of the weight is adjusted to the value set by the same operation as when the height is input, the decision button 5c is pressed (S14), the numerical value is confirmed (S15), and the operation proceeds to the age and sex input operation (S16). Here, four combination patterns of adults, children, men, and women are sequentially displayed by pressing the increase button 5d (S17) or the decrease button 5e (S19) (S18, S20), and the combination to be set is displayed. The setting is saved by pressing the enter button 5c (S21) (S22).
[0017]
  When all the settings are completed, the measurement start button 5b is pressed (S23), and the bioimpedance measurement is started (S24). In the bioimpedance measurement, if the measurer is rested for about 10 seconds while holding the second electrode group, the current applying means 7a during that time causes the current electrode 3a of the first electrode group 3 and the current of the second electrode group 4 to be current. A measurement current current of 50 kHz 0.5 mA sine wave is applied between the wrist of the left hand and the thumb of the right hand via the pole 4 a, and the voltage detection means 7 b is connected to the voltage electrode 3 b of the first electrode group 3 and the second electrode group 4. The voltage between the wrist of the left hand and the thumb of the right hand is measured via the voltage electrode 4b, and the bioelectrical impedance calculation means 7c is detected by the measurement current application means 7a and the magnitude of the measurement current applied to the living body and detected by the voltage detection means 7b. The bioimpedance is calculated based on the potential difference, the body fat mass calculation means 8 selects a calculation formula to be applied from a combination of age and sex selected in advance, and the bioimpedance measurement means 7c Substituting the determined bioelectrical impedance and the height and weight input by the input means 5 into the calculation formula, body fat mass is obtained (S25), and the obtained body fat mass is displayed on the display means 6 (S26) and measured. Exit.
[0018]
  When no operation is performed within 60 seconds after the measurement is completed (S27), the power is automatically turned off (S28) so that useless power is not consumed.
[0019]
  In the present embodiment, the current that the measurement current applying means 7a passes between the current electrode 3a of the first electrode group 3 and the current electrode 4a of the second electrode group 4 is constant even if the impedance between the electrodes changes. The bioelectrical impedance calculation means 7c stores this value in advance and calculates the impedance.
[0020]
  The body composition detection device of the present embodiment has a configuration in which the second block 2b is connected to the first block with an inclination of 45 ° toward the band 1 side. This is to prevent an unreasonable posture when the finger of the right hand is brought into contact with the second electrode group 4 disposed on both side surfaces of the two blocks 4b. At the time of measurement, the second electrode is mounted on the left wrist using the mounting means 1 as shown in FIG. 4 (a), and is disposed on the two opposing side surfaces of the second block 2b on the elbow side and palm side. By bringing the right finger to the voltage electrode 4b arranged on the side surface on the elbow side and the three fingers of the middle finger, the ring finger, and the little finger to the current electrode 4a arranged on the palm side surface of the group 4, The two blocks 2b are gripped by the right hand.
[0021]
  At this time, when the measurer grasps the second block 2b with the right hand, the measurer tries to firmly grasp the lateral side of the second block with the fingertips of all fingers, so that the middle finger of the right hand is aligned with the lateral side of the second block. In this case, the fingertips of the ring finger and little finger are to be arranged in a straight line. For example, when the second block 2b as shown in the conventional configuration is arranged with the first block 2a extended as it is, In order to align the fingertips of the middle finger, the ring finger, and the little finger of the right hand in a straight line, the right hand wrist 9 is likely to be bent as shown in FIG. 4B. However, in this embodiment, the second block 2b is disposed at an appropriate angle of 45 ° toward the band 12a with respect to the first block 2a mounted on the left wrist by the mounting means. As shown in a), the wrist on the right hand is in a straight natural posture and does not become an unnatural posture with the wrist bent.
[0022]
  Accordingly, the measurer can make contact with the second electrode group in a natural posture, and the force of the measurer is not excessively applied, so the burden on the measurer is small and stable measurement can be performed. In addition, since the measurement posture is not overwhelmed, there is no subtle tremor caused by the excessive measurement posture, and it is possible to stably touch the electrode with the finger. This also has the effect of preventing and enabling accurate measurement.
[0023]
  In the present embodiment, the inclination angle of the second block with respect to the first block is 45 °, but is not limited to this value, and may be in the range of 15 ° to 75 °, and more preferably 30 ° to 60 °. It is good to incline in the range.
[0024]
  (Example 2)
  FIG. 5 is a block diagram of a body composition detection apparatus according to Embodiment 2 of the present invention, FIG. 6 is an external view of the apparatus, and FIG. 7 is a detailed sectional view of the apparatus. The difference of the present embodiment from the first embodiment is that the second block 2b is rotatably connected to the first block 2a, and is fixed at that angle when an appropriate angle is selected.A fixing spring 12a, and a fixing release lever 12b for releasing the fixing;And an encoder 11 for detecting the angle between the first block and the second block.(Angle detection means)And the input of the input means is changed according to the output value of the encoder 11.
[0025]
  In the first embodiment, the angles of the first block 2a and the second block 2b are fixed, but the natural posture varies depending on the person. Therefore, in the body composition detection device of the second embodiment, the first block 2a and the second block 2b are rotatably connected so that the angle desired by the measurer can be obtained. Also,When the angle is fixed by the fixing spring 12a, it is fixed by the fixing release lever 12b.It must be configured so that it does not rotate unless it is released, and it does not rotate when rotation is unnecessary, such as during mounting or measurement. In addition, an encoder 11 that detects the angle between the first block 2a and the second block 2b is provided to collect angle information, and the angle information is used to input height and weight.
[0026]
  5, 6, and 7, reference numeral 10 denotes a rotating shaft that rotatably connects the first block 2 a and the second block 2 b.Thus, the encoder 11 detects the angle of the rotating shaft 9.. The rotating shaft 10 is composed of two cylinders, the outer cylinder 10a is fixed to the first block 2a, the inner cylinder 10b is fixed to the second block 2b, and the inner cylinder 10b is sandwiched between the outer cylinders 10a and rotated. To do. The rotation angle of the second block 2b is set to the same angle as that of the first block on the upper side and to 60 ° from the horizontal to the lower side on the lower side. The encoder 11 is attached to one end of the rotating shaft 10 and the two disks 11a and 11b in the encoder 10 are installed so as to rotate in the same manner as the cylinder according to the angle of the two cylinders of the rotating shaft 10. The two disks 11a and 11b are in contact with each other through the resistor 11c applied to a part of the surface, and when the angle changes, the contact area of the resistor 11c changes and the resistance between the two disks 11a and 11b changes. Changes.
[0027]
  This resistance change is detected by the angle detection circuit 11d, and the resistance value is converted into an angle.Output. In the first block 2aA fixed fixing spring 12a presses the inner cylinder 10a to fix the positional relationship between the two cylinders. When rotating the second block 2b, the fixing release lever 12b is pushed down so that the fixing spring 12a can be floated from the inner cylinder 10a to be rotatable, and the measurer sets the angle suitable for himself while pressing the fixing release lever 12b. When the release lever 12b is released, the fixing spring 12a again presses the inner cylinder 10a and is fixed at the set position. The unlocking button 12b is arranged on the surface of the first block 2a near the cylinder as shown in the figure, and this position is determined with the index finger while holding the second electrode group 2b with the thumb, middle finger, ring finger, and little finger of the right hand. Because it is an easy-to-press position, you can easily determine the desired position while trying the measurement posture. With the above-described configuration, the measurer can easily adjust and fix the angle to his / her favorite angle, and can perform accurate measurement with a stable posture.
[0028]
  In this embodiment, the angle information obtained from the encoder 11 is used for input of height and weight. Body fat mass measurement using bioimpedance is calculated by assuming the human body to be a cylinder with a constant density, calculating the resistivity of the cylinder, and calculating the ratio of the muscle conductor part to the fat insulator, The resistance is obtained from the measured bioimpedance, but the length and diameter of the cylinder are estimated from the height and weight. For this reason, in the case of a body composition detection device having no height measurement function or weight measurement function as in this embodiment, input of height and weight values is essential, and the input is troublesome. In the present embodiment, when inputting the height and weight on the height and weight input screen, the speed of change from the default value and the direction of increase / decrease are changed by changing the angle of the first block 2a and the second block 2b. Yes.
[0029]
  This flowchart is shown in FIG. First, when the power button 5a on the input means 5 of the main body 2 is pressed to turn on the power (S101), a height input screen is displayed (S102), and a default height 160 cm is displayed and blinking. In this state, the fixing release button 12b is pressed to release the fixing, and when the angle between the first block 2a and the second block 2b is changed, the encoder 11 detects this angle (S103), and the angle is displayed below 30 °. The displayed numerical value decreases, and the displayed numerical value increases when the angle is higher than 30 °. When the angle is increased from 30 ° to the upper side or the lower side, the change speed of the displayed numerical value is increased, and when the angle is decreased, the change speed is decreased (S104). When the difference between the value to be set and the current display value is large, an angle is set, and when the difference is small, the angle is made shallow to make it close to the value that is set quickly and intuitively. When it matches the set value, the determination button 5c is pressed (S105), the numerical value is confirmed (S106), and the process proceeds to input of the body weight (S107). The display of the weight is set to the value set by the same operation as that for the height input, the determination button 5c is pressed (S110), the numerical value is confirmed (S111), and the operation proceeds to the age and sex input operation (S112). Here, four combinations of adults, children, men, and women are sequentially displayed when the angle between the first block 2a and the second block 2b is changed by a predetermined value or more, and a determination button is displayed when the combination to be set is displayed. The setting is saved by pressing 5c (S115) (S116).
[0030]
  When the measurement start button 5b is pressed in this state (S117), it is first checked whether or not the second block 2b is rotating from the output of the encoder 11 (S118), but the fixation is released by the fixation release button 12b. In this state, a slight fluctuation occurs, and by detecting this, the presence / absence of unlocking can be checked. If it is determined that the fixation has not been released, the process proceeds to bioimpedance measurement (S119). In the bioimpedance measurement, if the measurer is rested for about 10 seconds while holding the second electrode group, the current applying means 7a during that time causes the current electrode 3a of the first electrode group 3 and the current of the second electrode group 4 to be current. A measurement current with a sine wave of 50 kHz 0.5 mA is applied between the left wrist and the right thumb via the pole 4 a, and the voltage detection means 7 b is connected to the voltage electrode 3 b of the first electrode group 3 and the second electrode group 4. The voltage between the wrist of the left hand and the thumb of the right hand is measured via the voltage electrode 4b, and the bioelectrical impedance calculation means 7c is detected by the measurement current application means 7a and the magnitude of the measurement current applied to the living body and the voltage detection means 7b. The bioimpedance is calculated based on the potential difference, the body fat mass calculating means 8 selects a calculation formula to be applied from a combination of age and gender selected in advance, and the bioimpedance measuring means 7c measures. The body fat mass is obtained by substituting the body impedance and the height and weight input by the encoder 11 and the decision button 5b into the calculation formula (S120), and the obtained body fat mass is displayed on the display means 6 (S121). To complete the measurement.
[0031]
  When no operation is performed within 60 seconds after the measurement is finished (S122), the power is automatically turned off (S123) so that useless power is not consumed.
[0032]
  In the body composition detection device of the present embodiment, the angle of the second block 2b is variable with respect to the first block 2a, but the angle is variable unless the fixation is released by pressing the fixation release button 12b to deform the fixation spring 12a. It has a configuration that does not. This is for facilitating the mounting operation and for increasing the measurement accuracy. If the second block 2b is not fixed at the time of wearing on the wrist, the second block is shaken at the time of the mounting work and gets in the way, making the mounting work difficult. If the angle of the second block is variable at the time of bioimpedance measurement, the fingertip of the right hand moves, so it is necessary to fix the posture from the base of the arm in order to fix it. This is a difficult task that requires power. Therefore, as in the present embodiment, it is usually fixed and variable only when necessary, so that these problems can be improved, and a body composition detection device that is easy to use and can perform stable measurement can be realized.
[0033]
  In addition, since the bioelectrical impedance is detected only when the second block is fixed, the bioelectrical impedance is detected only in a state where the posture is stable and the influence of the subtle vibration of the body is small, so that stable and accurate measurement is possible. it can.
[0034]
  With the above configuration, the body composition detection device of the present embodiment rotates the first block and the second block, so that the measurer can set his / her favorite angle, and can be easily measured and accurately detected.
[0035]
  Further, the unlocking button 12b is disposed on the surface of the first block 2a near the cylinder, and the second electrode group 2b is in a position where it can be easily pushed with the index finger while grasping the second electrode group 2b with the thumb, middle finger, ring finger and little finger of the right hand. Therefore, the rotation angle can be easily adjusted while taking the measurement posture.
[0036]
  Furthermore, since the angle between the first block and the second block is detected by an encoder and the angle is used for inputting physical information, a troublesome input operation can be easily performed.
[0037]
  In the above embodiment, the bioimpedance measurement is performed by confirming the fixation between the first block and the second block by the output of the encoder 11, but the output of the encoder 11 is also confirmed during the bioimpedance measurement, and the rotation is performed. A configuration may be used in which bioimpedance measurement is performed again when the signal is detected. Further, the detection of the presence / absence of fixation may be determined by monitoring the operation of the fixation release button 12b.
[0038]
  Further, the rotation mechanism of the first block and the second block, the mechanism of the fixing means, the encoder system, etc. are only examples, and the mechanism for realizing the rotation, the mechanism for fixing, and the angle are described. Any device may be used as long as it has an electrically detecting element, and it is not intended to limit these methods.
[0039]
  In the above-described embodiments, examples of the body composition detection device have been described, but any device that detects biological information between both upper limbs can be applied without being limited to the body composition detection device. For example, it can be applied to an electrocardiograph that detects the electrical potential of the heart by detecting the potential difference between both upper limbs. Since the posture is stable, there is an effect that a stable output signal can be obtained. In the case of an electrocardiograph, since only a potential difference is detected, it is sufficient that at least one electrode is provided for both the first electrode and the second electrode, and it is not necessary to form an electrode group.
[0040]
  Furthermore, it is of course possible to use as a composite device having the present invention in part, and there are various applications such as combining with a wrist blood pressure monitor or adding a function to a wristwatch.
[0041]
  By the above invention, it is possible to realize a biological information detection device and a body composition detection device that are easy to use and accurately measure, and it is possible to further promote the spread of the biological information detection device and the body composition detection device to general households, It can be used to improve health in an aging society in the future.
[0042]
【The invention's effect】
  As described above, the present invention reduces the noise of measurement signals due to subtle vibrations of the living body caused by an unstable posture, so that more accurate biological information can be detected, and easy-to-use and accurate biological information can be obtained. A biological information detection device capable of detection can be provided.
[Brief description of the drawings]
FIG. 1 is a block diagram of body composition detection means in Embodiment 1 of the present invention.
Fig. 2 External view of the device
FIG. 3 is a flowchart of the apparatus.
FIG. 4 is a diagram showing a state when the apparatus is used
FIG. 5 is a block diagram of body composition detection means in Embodiment 2 of the present invention.
FIG. 6 is an external view of the apparatus.
FIG. 7 is a sectional view of parts constituting the apparatus.
FIG. 8 is a flowchart of the apparatus.
FIG. 9 is an external view of a conventional body composition detection device.
FIG. 10 is an external view of a conventional electrocardiogram signal detection device.
FIG. 11 is an external view of a conventional body composition detection device.
[Explanation of symbols]
  1 band (mounting means)
  2 body
  2a First block
  2b Second block
  3 First electrode group (a pair of electrodes)
  4 Second electrode group (a pair of electrodes)
  5 input means
  6 Display means
  7 Bioimpedance measurement means
  8. Body fat mass calculation means (body composition detection means)
  10 Rotating shaft
  11 Encoder (Angle detection means)
  12a Fixed spring
12b Unlocking lever

Claims (1)

Bioimpedance measuring means for detecting bioimpedance between two different points on the living body, a pair of electrodes brought into contact with two different points on the living body, input means for inputting physical information, display means for displaying the detection results, A main body for storing the bioimpedance measuring means, the electrode group, the input means, and the display means; and a mounting means for mounting the main body on the living body. The main body has a first block to which the mounting means is fixed; The second block includes one of a pair of electrode groups, and the second block is inclined with respect to the surface side on which mounting means is fixed with respect to the first block, and the second block is the first block. The angle detection means is configured to be rotatable about a connecting portion with the block, and detects angle information of the second block with respect to the first block, and the angle detection means detects the angle. Body composition detecting device for inputting the body information of the body composition detecting means with fruit.

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